123203015151 has 4 divisors (see below), whose sum is σ = 164270686872. Its totient is φ = 82135343432.

The previous prime is 123203015147. The next prime is 123203015219. The reversal of 123203015151 is 151510302321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123203015151 - 2² = 123203015147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203015101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20533835856 + ... + 20533835861.

It is an arithmetic number, because the mean of its divisors is an integer number (41067671718).

Almost surely, 2^123203015151 is an apocalyptic number.

123203015151 is a deficient number, since it is larger than the sum of its proper divisors (41067671721).

123203015151 is an equidigital number, since it uses as much as digits as its factorization.

123203015151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41067671720.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 123203015151 its reverse (151510302321), we get a palindrome (274713317472).

The spelling of 123203015151 in words is "one hundred twenty-three billion, two hundred three million, fifteen thousand, one hundred fifty-one".